<template>
	<view>
		<!-- 使用自定义搜索组件 -->
		<!-- <my-search :bacolor="'red'" :radius="3"></my-search> -->
		<my-search @click="gotoSearch"></my-search>
		<view class="scrool-view-coutainer">
			<!-- 左侧滑动区域 -->
			<scroll-view class="left-scrool-view" scroll-y="true" :style="{height:wh+'px'}">
				<block v-for="(item,index) in cateList" :key="index">
					<view :class="['left-scrool-view-item',index===active?'active':'']" @click="activeChange(index)">
						{{item.cat_name}}
					</view>
				</block>
			</scroll-view>
			<!-- 右侧滑动区域 -->
			<scroll-view class="rigth-scrool-view" scroll-y="true" :style="{height:wh+'px'}" :scroll-top="scrollTop">
				<view class="care-lv2" v-for="(item2,index2) in cateLevel2" :key="index2">
					<view class="cate-lv2-title">/{{item2.cat_name}}/</view>
					<!-- 当前二级分类下的三级分类 -->
					<view class="care-lv3-list">
						<!-- 三级分类 -->
						<view class="care-lv3-item" v-for="(item3,index3) in item2.children" :key="index3"
							@click="gotoGoodsList(item3)">
							<image :src="item3.cat_icon"></image>
							<text>{{item3.cat_name}}</text>
						</view>
					</view>
				</view>
			</scroll-view>
		</view>
	</view>
</template>

<script>
	// 导入 mixin 模块
	import tabBardge from '@/mixins/tabbar-badge.js'
	export default {
		// 将 badgeMix 混入到当前的页面中进行使用
		mixins: [tabBardge],
		data() {
			return {
				// 当前设备可用高度
				wh: 0,
				//分类列表
				cateList: [],
				//激活项
				active: 0,
				// 二级分类列表
				cateLevel2: [],
				//右侧滚动区域
				scrollTop: 0
			};
		},
		onLoad() {
			// 当前设备可用高度
			const sysInfo = uni.getSystemInfoSync()
			// console.log(sysInfo)
			this.wh = sysInfo.windowHeight - 50
			//获取分类列表数据
			this.getCateList()
		},
		methods: {
			//获取分类列表数据
			async getCateList() {
				const {
					data: res
				} = await uni.$http.get('/api/public/v1/categories')
				// console.log(res)
				if (res.meta.status !== 200) {
					return uni.$showMsg()
				}
				this.cateList = res.message

				//二级分类赋值
				this.cateLevel2 = res.message[0].children
			},
			//激活
			activeChange(index) {
				this.active = index

				//重新为二级分类赋值
				this.cateLevel2 = this.cateList[index].children
				//右侧滚动区域
				this.scrollTop = this.scrollTop === 0 ? 1 : 0
			},
			//跳转到商品列表
			gotoGoodsList(item) {
				uni.navigateTo({
					url: '/subpak/goods_list/goods_list?cid=' + item.cat_id
				})
			},
			//跳转到搜索页面
			gotoSearch() {
				uni.navigateTo({
					url: '/subpak/search/search'
				})
			}
		}
	}
</script>

<style lang="scss">
	.scrool-view-coutainer {
		display: flex;
	}

	.left-scrool-view {
		width: 120px;
	}

	.left-scrool-view-item {
		background-color: #f7f7f7;
		line-height: 60px;
		text-align: center;
		font-size: 12px;
		position: relative;

		&.active {
			background-color: white;

			&::before {
				content: '';
				display: block;
				width: 3px;
				height: 30px;
				background-color: red;
				position: absolute;
				top: 50%;
				left: 0;
				transform: translateY(-50%);
			}
		}
	}

	.cate-lv2-title {
		font-size: 12px;
		font-weight: bold;
		text-align: center;
		padding: 15px 0;
	}

	.care-lv3-list {
		display: flex;
		flex-wrap: wrap;

		.care-lv3-item {
			width: 33.33%;
			display: flex;
			flex-direction: column;
			justify-content: center;
			align-items: center;
			margin-bottom: 10px;

			image {
				width: 60px;
				height: 60px;
			}

			text {
				font-size: 12px;
			}
		}
	}
</style>
